Powek-loom for weavisra



N. PETERS, PHOTO-LITHOGRAPHF-R, WASHINGTON. D. CA

`cerned inthe `stopping ofthe loom by the ERASTUS B. BIGELOW, OFLANCASTER, MASSACHUSETTS.

POWER-LOOM FOR WEAVING.COUNTERPANES, `85C.

` Specification of Letters Patent No. 2,744, dated,August12,.-`1842;.Antedated May 1, 1842i.

To all whom t may concern:

Be itknown that I, ERAsrUs B. BIGnLow, of Lancaster, in the county ofWorcester andState of lIassacliiisetts,have invented `certainImprovements inthe Loom for Weaving Counterpanes and `Vhich May BeApplied to theVeaving of other Articles,

for which `Letters vPatent ofthe `United States were granted to me,dated April 24, 1840, which improvements "are applicable also to loomsin general operated by power looms intended forffigured weavingywhich`weights, with the friction consequent thereon, producea veryconsiderable resistance, which itis necessary to overcome. Sec-` ondly,in the arrangement of the parts con` manner in which the protecting rodacts thereon. Thirdly, in an apparatus for counteracting the momentum ofthe loom, wheii it is thrown out' of gear for changing the? spools,or'for any other purpose.

`In the accompanying drawing, Figure l,

is alperspective view ofthose parts of the, Aloom which it is necessaryto show `for thcg ,purpose of illustratingmy improvements; the partsthereoffnotnecessary to this illus-` tration being omitted. This View istakenf `from the end `which contains the toothed gearing. FigQ, is atopview ofthisgearf `ing, and of `a part of the frame and its ap-lpendages.

A, A\, are azfast anda loose pulley, which are of the ordinary kind;on:` the shaft `B, of these pulleys there is a small driving wheel C,which meshes into the large wheel D. The wheel C, may vary in sizeaccording to the power to be gain-ed. `In s the machine from which thedrawing istalien it has thirty-two teeth, and the wheel D, one hundredand fifty teeth. On the shaft D, of the wheel D, there is a wheel E,with fifty teeth, which meshes into the wheel F, of a hundred and fiftyteeth, which wheel is on the cam shaft E', and drives the wheel G, uponthe crank shaft which carries the cranks by which the lathe H, isoperated.

This number of teeth `will-show therelative proportions, or diameters,`of :these wheels `this, however, `may be varied, in, a `manner of thesame sizewith each other, or of such relative'proportions as to`bringthe arresting pinI, ontheiwheel D,whic`h` serves to f stop theloomproundgso as to li befarrested bythe stop lever J,at the"momentfwhen the lathe: arrives at` the proper point of itsmotioninapproachingthe breast beam.

The following isthe `manner of arranging thejparts concerned inthestopping of thc loom. di, TK, Fig. 8, is@` the protecting rod, i

on thelathe, whichisi constructed in the ordinary way. `Inthe protectingrod as heretofore used, the ibayonet L, acts iipon `a lever placed underthe breastbeam, `the outer end of which lever causesv the machinetofbefthrown out ofgearby the shifting of the band.` Insteadofnactingupon `such la lever, I allow the bayonet L,fto:come into `contact with aprojecting vpiece 4M, `on a rotating shaftpFig. 3, which showstheundersidei ofrthe breast` beam, andthe manner in which Iairangethefrotating shaft, and connect-,it with other partsgliig. il,repre-y sents' the rotating shaft, and its connecting parts, on a flarge "scale, :and `without `the frame.

N, N, `istlie 'rotating shaft, and when the bayoneton the L protectinglrod comes into `Contact withathefprojectihgpiece M, onf the innerend ofthisshaft, it will causeitto rotate suiliciently `farto allow thebayonet -to pass the piece 1M, freely, andthus to obviate the finjury4which `would be likely `to yoccurbythelsuddenarresting of the lathewhen 1 `under the `full rmoin entum of the 1 machineyas `is the case inthe ordinary loom. The cam O, on `the end` of this shaft liberates theshipper spring y O andi shifts thei band in theusual way. Thespirali-spring N', is attached to the shaft and to the breast beaminsuchmanner as to canse the "shaft to resume its proper position whenleft free to do so. The additional apparatus for suddenly arresting themotion of the loom when the shuttle is in the warp, and consequentlydoes not enter the shuttle boX, consists of a sliding shaft P, which isforced forward by the spiral spring Q, and is held back by the stoppiece R, made fast upon the shaft N,

said stop piece bearing against a shoulder a, on P; and when this shaftN, vibrates, the sliding rod P, will consequently be relieved, andcarried forward to the requisite distance for causing the vertical shaftT, to rotate to a short distance; the shaft being connected to thesliding shaft P, by an arm U, which receives a pin on the sliding shaft:The rotating of the shaft T, causes it to draw in the stop lever J,Figs. l and 2, so as to stop the wheel D, by bringing its upper end intocontact with the arresting pin I, by means ofthe arm b, and the rod o,as

VVwill be readily understood by examining the drawing. The pin I, beingclose to the periphery of this wheel, acts with a leverage equal to itsradius, and produces the desired effect with perfect safety to themachinery.

The following is a description of the ap paratus for counteracting themomentum of the loom when it is thrown out of gear. V, is a frictionpulley, around the upper half of which passes a friction band W. Thisband is made fast at one end to the lower part of the back of the frameof the loom, and at the other end to a lever X, suspended somewhat likea treadle, and operating as a weight to the band; this is shown indotted lines in Fig. l. When the lever X, is raised, the pulley V, willrevolve without making any sensible friction on the band; but when it isdown, a very powerful friction will be produced by the mere adhesion ofthe band to the pulley.

Thelever X, is connected by a rod cl to the elbow lever y, y, and whenthe shipper spring is held in, it keeps the lever X, elevated, but whensaid spring is liberated, the lever X, will be allowed to fall, andproduce the required friction upon the pulley V.

It will be readily perceived that variations may be made in thearrangement of each of the three combinations above described, whiletheV same results may be obtained; I do not intend, therefore, byanything contained in the foregoing description to limit myself to theprecise form and combination of parts herein given, but to vary these asI may think expedient, while I attain the same end by analogous means.For example, instead of the rotating shaft for throwing the loom out ofgear, a vibrating lever may be employed, which shall allow .the bayonetof the protection rod to pass it,

and a result, which I should deem analogous to those described. Insteadof the band on the friction pulley, a friction brake may be brought intoplay, and the result in this case would be nearly the same. But I havegiven those methods of construction which I think are the most simple,direct, and eiiicient Instead of attaching the arresting pin I, to thewheel I), there may be three such pins attached to, and projecting from,the wheel F, at such points near its periphery as will cause the motionof the loom to be arrested at the proper time by the action of a stoplever. The VstopY lever J, must, in Vthisc'ase,V

be so arranged as to be brought into Contact with one of the arrestingpins at the proper time, by means analogous to that described, butmodified to suit the change of position. Should the relative revolutionsof the lathe and cam shafts be altered, the number of arresting pinsmust be adapted thereto.

Vhat I claim as constituting my improvements on the power loom forweaving counterpanes, and other figured fabrics, and which I desire tosecure by Letters Patent,

1. The manner in which I have combined the rotating shaft, with theother parts connected with the stopping of the loom; that is to say, Iclaim the allowing of the bayonet of the protecting rod to pass freelybeyond the projecting piece on the rotating rod, or lever, against whichit strikes, so as to prevent the sudden arresting of the lathe, or themotion of the looms, by said bayonets, when the shuttle does not arriveat its place within the shuttle box, but remains in the warp.

2. And in this part I likewise claim the combining with the rotatingshaft,'or lever, t-he sliding shaft P, and its appendages, for actingupon the stop lever, and the suddenly arresting the motion of the loomby said stop lever, at the time, and substantially in the manner hereindescribed.

3. I claim likewise, the combination of the friction pulley and band,with the apparatus for stopping the loom, said friction pulley and band,or other device, being connected with the loom and operatingsubstantially in the manner, and for the purpose, herein set forth.

ERASIUS B. BIGELOW.

W'itnesses:

CLEMT. T. COOTE, Trios. B. JONES.

